The blade-style Zorge G2 is a lightweight pair of sport glasses that are perfect for any activity. The flexible and durable black frame is equipped with soft thermoplastic rubber nose pads and temple arms to create a comfortable, nonslip fit. The open lower frame prevents sight obstruction and allows lenses to be removed and replaced easily..Light Blue lenses decrease eye fatigue resulting from yellow light. They are perfect for indoor settings with yellow incandescent, yellow fluorescent, or sodium vapor lighting. The addition of Vapor Shield "military grade" anti-fog technology keeps these lenses completely resistant to fog, even in extreme environments. 69% of visible light passes through this lens color..Edge Eyewear® glasses are tested in independent laboratories to ensure their compliance with ANSI Z87.1+2015 and Military Ballistic MCEPS GL-PD 10-12 standards. All Edge lenses block 99.9% of UVA, UVB, and UVC radiation and are coated to reduce scratching.